git.sesse.net Git - casparcg/blob - core/producer/color/color_producer.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../../stdafx.h"
  23
  24 #include "color_producer.h"
  25
  26 #include <core/producer/frame_producer.h>
  27 #include <core/frame/frame.h>
  28 #include <core/frame/draw_frame.h>
  29 #include <core/frame/frame_factory.h>
  30 #include <core/frame/pixel_format.h>
  31 #include <core/monitor/monitor.h>
  32
  33 #include <common/except.h>
  34 #include <common/array.h>
  35
  36 #include <boost/algorithm/string.hpp>
  37
  38 #include <sstream>
  39
  40 namespace caspar { namespace core {
  41
  42 class color_producer : public frame_producer_base
  43 {
  44         monitor::basic_subject  event_subject_;
  45
  46         draw_frame                              frame_;
  47         const std::wstring              color_str_;
  48
  49 public:
  50         explicit color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& color)
  51                 : color_str_(color)
  52                 , frame_(create_color_frame(this, frame_factory, color))
  53         {
  54                 CASPAR_LOG(info) << print() << L" Initialized";
  55         }
  56
  57         // frame_producer
  58
  59         draw_frame receive_impl() override
  60         {
  61                 event_subject_ << monitor::event("color") % color_str_;
  62
  63                 return frame_;
  64         }
  65
  66         std::wstring print() const override
  67         {
  68                 return L"color[" + color_str_ + L"]";
  69         }
  70
  71         std::wstring name() const override
  72         {
  73                 return L"color";
  74         }
  75
  76         boost::property_tree::wptree info() const override
  77         {
  78                 boost::property_tree::wptree info;
  79                 info.add(L"type", L"color");
  80                 info.add(L"color", color_str_);
  81                 return info;
  82         }
  83
  84         void subscribe(const monitor::observable::observer_ptr& o) override
  85         {
  86                 return event_subject_.subscribe(o);
  87         }
  88
  89         void unsubscribe(const monitor::observable::observer_ptr& o) override
  90         {
  91                 return event_subject_.unsubscribe(o);
  92         }
  93 };
  94
  95 std::wstring get_hex_color(const std::wstring& str)
  96 {
  97         if(str.at(0) == '#')
  98                 return str.length() == 7 ? L"#FF" + str.substr(1) : str;
  99
 100         if(boost::iequals(str, L"EMPTY"))
 101                 return L"#00000000";
 102
 103         if(boost::iequals(str, L"BLACK"))
 104                 return L"#FF000000";
 105
 106         if(boost::iequals(str, L"WHITE"))
 107                 return L"#FFFFFFFF";
 108
 109         if(boost::iequals(str, L"RED"))
 110                 return L"#FFFF0000";
 111
 112         if(boost::iequals(str, L"GREEN"))
 113                 return L"#FF00FF00";
 114
 115         if(boost::iequals(str, L"BLUE"))
 116                 return L"#FF0000FF";
 117
 118         if(boost::iequals(str, L"ORANGE"))
 119                 return L"#FFFFA500";
 120
 121         if(boost::iequals(str, L"YELLOW"))
 122                 return L"#FFFFFF00";
 123
 124         if(boost::iequals(str, L"BROWN"))
 125                 return L"#FFA52A2A";
 126
 127         if(boost::iequals(str, L"GRAY"))
 128                 return L"#FF808080";
 129
 130         if(boost::iequals(str, L"TEAL"))
 131                 return L"#FF008080";
 132
 133         return str;
 134 }
 135
 136 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, const std::vector<std::wstring>& params)
 137 {
 138         if(params.size() < 0)
 139                 return core::frame_producer::empty();
 140
 141         auto color2 = get_hex_color(params[0]);
 142         if(color2.length() != 9 || color2[0] != '#')
 143                 return core::frame_producer::empty();
 144
 145         return spl::make_shared<color_producer>(frame_factory, color2);
 146 }
 147
 148 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, const std::wstring& color)
 149 {
 150         auto color2 = get_hex_color(color);
 151         if(color2.length() != 9 || color2[0] != '#')
 152                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("color") << arg_value_info(color2) << msg_info("Invalid color."));
 153
 154         core::pixel_format_desc desc(pixel_format::bgra);
 155         desc.planes.push_back(core::pixel_format_desc::plane(1, 1, 4));
 156         auto frame = frame_factory->create_frame(tag, desc);
 157
 158         // Read color from hex-string and write to frame pixel.
 159
 160         auto& value = *reinterpret_cast<uint32_t*>(frame.image_data(0).begin());
 161         std::wstringstream str(color2.substr(1));
 162         if(!(str >> std::hex >> value) || !str.eof())
 163                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("color") << arg_value_info(color2) << msg_info("Invalid color."));
 164
 165         return core::draw_frame(std::move(frame));
 166 }
 167
 168 }}